linux check free memory code example

Example 1: linux how to free memory

echo 2 > /proc/sys/vm/drop_caches

Example 2: how can I check ram usage in mb in linux?

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https://www.howtogeek.com/659529/how-to-check-memory-usage-from-the-linux-terminal/

Example 3: free memory linux command

# sync; echo 1 > /proc/sys/vm/drop_caches